Mailinator - Any Inbox. Any Time.
Protect IID - Protect your privacy with single-use email addresses
Guerrilla Mail - Guerrilla Mail is a web-based app that provides a disposable and anonymous email address. Users of the service are not required to set up an account in order to send or receive emails.
e4ward - E-Mail-forwarding from a freely selectable to another E-Mail-address.
MailDrop - maildrop is a Mail delivery agent used by the Courier Mail Server. The maildrop MDA also includes filtering functionality. maildrop receives mail via stdin and delivers in both Maildir and mbox formats.
Gigainbox.com - Gigainbox.com is a straightforward and highly useful temporary email service provider that you can use to remove spam from appearing in your real email inbox and sign up on sites that otherwise won’t let you access its content.